enum.h

QT4的utils库源码包.解压后运行./configure配置,然后make.使用时在.pro文件中加入两行:LIBS+=-L$$(CPPLIBS)-lutils及INCLUDEPATH+=$$(C

#ifndef OOENUM_H
#define OOENUM_H

#include "myexport.h"
#include <QStringList>
#include <QTextStream>
#include <QMap>

typedef QMap<QString, int> NameMap;

//start


/** @short An object-oriented enumerator class which
  uses strings instead of compiler symbols,
  and provides bidirectional mapping between
  QStrings and int values. No compiler symbols
  are introduced.
  */

class UTILS_EXPORT Enum {
public:
    Enum(int enumval = 0);
    virtual ~Enum();

    /** Converts from the int value to a String */
    virtual QString toString() const;

    /** Converts from a string to the internal enum value.
          returns false if an invalid string is passed in. */
    virtual bool fromString(QString str) =0;

    virtual operator int() const ;

    bool operator=(int other);
    bool operator=(QString other);
    
    bool operator==(const Enum& other) const {
        return m_Val == other.m_Val;
    }
    
    
    virtual QStringList names() const = 0;

protected:
    //end
    /** Adds symbols to the map with enum values starting
           at 0
         @param nameMap - the map containing strings to numbers
         @param nameList - a string list of names to add to the map
         @param initialized - if true, do nothing (to avoid repeat-redundant calls
                  - if false, set to true after initializing.
    */
    static NameMap& initMap(NameMap& nameMap,
                            QStringList nameList, bool  & initialized, int startIndex = 0);
    //start
    int m_Val;

};

/* optional */
QTextStream& operator<<(QTextStream& ts, const Enum& pref);

//end
#endif